US3700957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant polyester plasticizer containing 2,2-dibromomethylene-1,3-propanediol
Assignee: MassMutual Corporate Value Partners
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Filing: 1971-01-13
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Granted: 1972-10-24
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Expires: 1991-01-13
Abstract
Abstract Disclosed herein are novel compositions of matter having both flame-retarding and plasticizing properties and have the following mole percent compositions: DICARBOXYLIC ACIDS 20 TO 50GLYCOL5 TO 25) 2,2-DIBROMOMETHYL-1,3 PROPANEDIOL 5 TO 25TERMINATING AGENT 0 TO 40ALKYL PHOSPHITE 0 TO 10
Inventors
- 👤 David A Daniels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:51
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08G; C08G63/00; C08G63/68; C08G63/682; C08G63/6824; C08G63/6826; C08J; C08J9/00; C08J9/0061; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08L101/00; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L31/00; C08L31/02; C08L31/04; C08J2325/00; C08J2325/02; C08J2325/04; C08J2325/06; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06; C08J2331/00; C08J2331/02; C08J2331/04; C08J2467/00; C08J2467/02; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
28 words
The homogeneous composition of claim 1 in which the second group member is neopentyl glycol, ethylene glycol, 1,4-butanediol, 1,3 butanediol, propylene glycol, 2,2,4 trimethylpentane glycol, or dipropylene glycol.
Claim 2
Dependent Claim
182 words
A homogeneous composition of matter comprising 100 parts by weight of a resin selected from the group consisting of polyvinyl chloride, polyvinyl acetate, and polystyrene and 20-120 parts by weight of a flame-retardant polyester plasticizer wherein said flame-retardant plasticizer is prepared by the following sequential steps: a. forming a mixture by admixing 20-50 mole percent of a dicarboxylic acid selected from the group consisting of adipic acid, pimelic acid, suberic acid, azelaic acid, and sobacic acid, 5-25 mole percent of a glycol selected from a second group consisting of ethylene glycol, propylene glycol, neopenthyl glycol, 2,2,4-trimethylpentane glycol, a butylene glycol, a pentylene glycol, a hexylene glycol, diethylene glycol, and dipropylene glycol, 5-25 mole percent of 2,2-dibromomethylene-1,3-propanediol, 1-10 mole percent of a dialkyl hydrogen phosphite, and a quantity of a chain terminator selected from the group consisting of 2-ethylhexanol and isodecyl alcohol to total 100 mole percent; b. esterifying the mixture and simultaneously removing the esterification by-product water to form said flame-retardant polyester plasticizer; and c. cooling and recovering the flame-retardant polyester plasticizer; the resulting homogeneous composition of matter having flame retardant properties.
Claim 3
Dependent Claim
28 words
The homogeneous composition of claim 3 in which the second group member is neopentyl glycol, ethylene glycol, 1,4-butanediol, 1,3 butanediol, propylene glycol, 2,2,4 trimethylpentane glycol, or dipropylene glycol.
Claim 4
Dependent Claim
17 words
The homogeneous composition of claim 3 in which the dialkyl hydrogen phosphite''s concentration is 1 mole percent.
Claim 5
Dependent Claim
16 words
The homogeneous composition of claim 3 in which the dialkyl hydrogen phosphite is dimethyl hydrogen phosphite.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |